"Our company will fully cooperate with the arrangement by Australia's authority to ensure the legality," Evergrande's vice president Ke Peng said in a statement, adding the company had appointed a local legal advisor in Australia to take full charge of this transaction when it bought the property.
Golden Fast Food was not immediately available to comment. One of the agents involved in the deal, Christie's International Real Estate, said the property was purchased by an Australian company.
Australian property has long been a popular choice for Chinese money but investments appear to have accelerated in the past year as Beijing's crackdown on corruption gathered momentum.
Australia restricts foreigners to buying new properties, but a parliamentary committee inquiry last year found widespread abuse of the system. Villa del Mare, with sweeping Sydney Harbour views and an infinity edge pool, is at least a decade old.
Read MoreForeigners add to Australia housing bubble fears
"It seems like they are making an example of a property of this stature and size to say that it is really crucial that these rules are followed," Nicolette van Wijngaarden, managing director of global luxury property sales and rentals at Unique Estates Australia, said.
Evergrande, the fourth-largest property developer in China by sales, is owned by Hui Ka Yan, China's 15th richest man with a net wealth of around $6.4 billion, according to Forbes.
Last month, Australia announced plans to charge foreign nationals buying residential property fees and fine those who break foreign investment laws in a bid to cool property prices.
Sydney home prices surged 13.7 percent annually in February, adding to the pressure on the central bank to prevent a speculative run-up in home prices at a time when interest rates are at record-lows.
The six-bedroom Villa del Mare once belonged to a London-based entrepreneur who almost doubled the A$21.5 million she paid a decade ago for the Mediterranean-style property, according to property website domain.com.au.